Base of a tube



FIG. 1 is an upper perspective view of the base of a tube showing my design.

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is an opposite side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is an additional top, front, and right side perspective view thereof; and

FIG. 9 is an additional top, front, and right side perspective view thereof; and,

FIG. 10 is an additional top, front, and right side perspective view thereof.

The broken-line disclosure of various attachments in the views are for illustrative purposes only and form no part of the claimed design. 

I claim the ornamental design for a base of a tube, as shown and described. 